5
router1
router2
router3
router4
router5
router1 router2 0.1 10.0 1500
router1 router5 0.1 10.0 1500
router2 router5 0.1 10.0 1500
router2 router3 0.1 10.0 1500
router4 router5 0.1 10.0 1500